Vacuum circuit breaker solid-sealed polar pole for environmental protection switch device

Abstract

The invention relates to a solid-sealed pole of a special vacuum circuit breaker for environmental protection switchgear, which includes a pole insulating cylinder, a vacuum interrupter, a silicone rubber buffer layer and an isolating switch assembly; the pole insulating cylinder is connected with a vacuum interrupter, a silicon The rubber buffer layer and the isolation switch assembly; the silicon rubber buffer layer is located on the outer periphery of the vacuum interrupter; the isolation switch assembly is connected with the vacuum interrupter and located at the upper end of the vacuum interrupter. In the present invention, a vacuum interrupter, a silicone rubber buffer layer and an isolation switch assembly are connected in the pole insulating cylinder; the silicone rubber buffer layer is located on the outer periphery of the vacuum interrupter; the isolation switch assembly is directly connected to the vacuum interrupter, and the structure is simple and reliable , strong conductivity; the inner wall of the isolation cavity is extended with isolation plates and umbrella skirt structures on both sides, which effectively prevents the isolation from short-circuiting to the ground and the charged distance between phases, and effectively increases the creepage distance between fractures.

Description

technical field [0001] The invention relates to the field of high-voltage switches, and more specifically refers to a special vacuum circuit breaker solid-sealed pole for environmental protection switchgear. Background technique [0002] In the field of high-voltage switches, the embedded poles of vacuum circuit breakers are one of the key components of high-voltage switchgear, which can be arranged horizontally or vertically to achieve modular design. At present, the external insulation of the fixed switchgear and the central switchgear is all air insulation. Due to the large insulation distance of the air, the vacuum circuit breaker in the prior art usually has a relatively large volume. There are great limitations in application. When the outer insulating gas is changed, the insulating cylinder can't play an insulating role at all, and can only be used as a fixed part, and its function is limited accordingly. [0003] With the improvement of power supply reliability and...

AI Technical Summary

Problems solved by technology

And SF6 gas is listed as one of the six gases with greenhouse effect, and SF6 gas will decompose into toxic low-fluoride gas after arc discharge, so the power switch of SF6 gas insulating medium is also restricted.

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